Combined union and elbow for coupling pipes.



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JORGE ll. THOMAS, OF .WASHINGTUN, DISTRICT OF COLUMBIA, ASSIGNOR OF ONE-HALF TO HARRY E. MORAN. OF SAME PLACE;

@ Cilh'llZlll lit-ZD UhllOhl AND ELBOW FQR CQUPMNG PlPES.

iBPFECIFICllTION forming part of Letters Patent No. 657,712, dated. September 11, 1900.

A plication filed July 17, 1900. nerial'llo. 23,935. .110 model.)

To (LZZ t'll/(mt it may concern.-

Be it known that I, GEORGE H. THOMAS, a citizen of the United States of America, resid ing in Washington, in the District of Columbia, have invented a new and useful Improvement in a Combined Union and Elbow for Coupling Pipes, of which the following is a specification.

My invention has relation to improvements in a combined union and elbow for coupling pipes; and one object is to provide simplified means for securing the approaching ends of steam or water pipes in an elbow connection whereby a steam or Water tight joint is made without the interposition of the usual softiuetal bushing or composite packings.

A further object is to provide a pipe connection of the hind intended which is readily applied, speedily adjusted, and which may be as conveniently detached.

With these objects in view the invention consists in the combination, with an elbow pipecoupling and pipes in the ends thereof, of metal bushing or clamping rings exteriorly tapered and diagonally slitted arranged in the coupling and surrounding the inserted pipes and adjusting and coupling nuts or caps to push the clainping-ringsinwardly and clamp the parts together.

The invention further consists in the novel constrt'iction of parts and their combination, as will hereinafter be fully disclosed, and the novelty therefore particularly pointed-outin the claims. v

i have fully and clearly illustrated the invention in the accompanying drawings, to be taken as-a part hereof, and wherein- Figure l is a, central sectional view through the device, showing the attached pipes in position. Fig. 2 is a detail View of the outer or main clamping ring or sleeve. Fig. 3 is a de tail view of the inner and shorter clampingrihg. Fig. l is a detail perspective showing the preferred arrangement of the clamping rings or sleeves.

Referring to thedrawi'ngs, A designates the bent or elbow couplingsection of the usual exterior conformation and provided with exterior screw-threaded ends 1 2. This coupling-section it. is cored out at each end, the

bores or openings heihgutapered from the the bent section.

than the inner rings 6 and has formed about 70 its outerend an annular flange 7 to strengthen mouth of the respective ends inward, as at 3 3, to afford tapering seats for the respective v clamping-rings. In the tapering seats thus provided are seated the packing and pipe; 5 clamping rings, collars, orsleeves 5 6, the latter of which consists of a metal band or ring, having a smooth straight interior surface or bore and a tapering exterior surface alining with the tapering seats formed in the ends of the coupling section or piece and adapted to fit therein ator adjacent to the lower end portion of the seats. The ring or collar 5 constitutes the outer or main clamping device for the pipe ends extending into the bent sectiCvll-,3S'Sl1OW!1. The bore of this ring 5 is. straight and smooth, and the exterior is tapered to fit the tapered seats in the ends of.

This ring 5 is made longer it and provide an extended surface for the. impact of the clamping nuts or caps. Both the rings 5 and '6 are slit diagonally from end to end, as at 8 9, the slits forming slots which provide a limited expansion and contraction when applied to the pipe ends and sothat they may have endwisemovement when being forced into clamping position. It will be perceived that a single tapering ringorsleevc 8o slot-ted throughout its length would serve the purpose intended; but because of leakage of steam or fluid through a continuous slit or slot in a single ring I prefer to use the two rings and place them with the slots opposite to each other, as indicated in Fig. 4 of the drawings,whereby communication is stopped and all leakage prevented.

B B designate the coupling andclamping nuts or caps, consisting of a cylindrical sleeve having interior screwthreads to engage in 7 those of the screw-threaded ends of the bent section or elbow and havingjan inner annular shoulder or flange 10 surrounding the pipehole, whichfits slidingly over the pipe 12, to 5 be secured in the bent section. The outer end of the clamping nuts or cape may be formed with an angular collar 11 to eugagea wrench when fitting and coupling the parts.

It will be perceived from the foregoing dewe scription, taken in connection with the drawlugs, that all the parts are of the simplest nonstrnction, that theyareeasily fitted in Ztion and readily scoured together, when so secured they present a strong, tight, and reliable joint, andthat when desired the parts can be convenientlyseparated and detached,

The parts are assembled and the union or ccnpleefiectedhyjlip ping the clam ping-nut over the pipe to be coupled to the elbow, then placing the clamping-rings in their seat in the elbow,tl1en placing the end of the pipe in the clamping-rings, and then screwing up the clamping not or cap until the parts are rigid and secure.

it is apparent that a pipe-coupling of the general. construction shown may be applied to and utilized in coupling or connecting pipes laid in the same straight line ofi direction.

What 1 claim is-- y l. In a pipe-coupling, the combination with approaching ends of pipes, of a bentpipesection provided on. itsends and formed with interior tapering olaniplng ring seats, tapering clamping-rings having diagonal slots extending from end to end, seated in the said ring-seats, and clamping n ntsor caps having interior screw-threads the bent pipeta pered seats and clamp the pipes to the bent section, substantiall-as-set forth;

in a pipe-coupling, the combination of a bent pipe section provided with exterior screw-threads on its ends and termed with interior tapering clamping-ring seats, a slotted and tapering cianiping'ring seated at the lower end portion of each ring-seat, a slotted enter tapering cianipingn-ing seated in the outer portion of said seats with its inner end abutting the outer end of the inner olainping ring, said being diagonally slotted from end to end, pipes arranged in the clampingrings, and clamping nuts or caps on the pipes that rings being arranged in diagonal slots opposite to each other,-and

with exterior screw-threads push the formed with interior screw-threads to engage the threaded ends of the bent pipe-section and push the elatnpingwings into clamping relation on the parts, substantially as set forth.

' 3. In a pipe coupling, the combination of a bent pipe section provided with exterior screw=threadson its ends and formed with in terior tapering clamping-ring seats, a taper- 'ing clampingwingseated at the lower end portion of each ring=seat and provided with a diagonal slot extending from end to end thereof, a tapering elamping ring seated in the outer portion of said seats with its inner end abutting the outer end of the inner clamping-ring, and formed with a diagonal slot extending from end to end thereof, said their seats with the clamping nuts or caps on the pipes formed with interior screw-threads to engage the threaded ends of the bent pipe-section and clamping-rings into clamping relation on the 'parts, substantially as set forth.

4. In a pi pe-conpling, the combination oi a coupling-piece provided with exterior screwthreads on its end and formed with an interior tapering clamping-ring seat, a clampingring having a tapered exterior and slotted from end to end, seated in the inner end per tion of said ringseat, aclam pingfl'ing slotted from end to end and arranged in the outer end portion of the said ring-seat with its innerv end abutting the outer end of the inner clamping-ring, a pipe in the clampingrings, and a clamping not or cap on the pipe formed with interior screw-threads to engage the screw-threads of the eonnling-pleoe and push the clamping -rings endwise to clamp the pipe, substantially as described.

GEORGE H. THOMAS.

Witnesses:

E. WARREN JOHNSON, WILLIAM Hot inn. 

